Explore 15 of the top US National Parks with the best collection of trail maps available. National Geographic – THE place for maps – has opened up their best-selling, detailed Trails Illustrated National Parks Maps for download to your favorite Windows Phone 7. Plan your trip by browsing the maps and marking places you'd like to see. When visiting, use your smartphone to help you find your way around the park. A great gift app for your favorite outdoor adventurer, family trip planner or armchair explorer! MAPS FOR 15 GREAT NATIONAL PARKS: Acadia Bryce Canyon- Canyonlands - Glacier/Waterton - Grand Canyon - Grand Teton - Great Smoky Mountains - Mount Rainier - Olympic - Rocky Mountain - Sequoia/Kings Canyon - Shenandoah - Yellowstone - Yosemite - Zion MAPS THAT KNOW WHERE YOU ARE: See your current position on the map - Know how far it is to your destination - Mark your campsite or car for an easy return MAPS THAT KNOW WHAT'S AROUND YOU: Search for places by name or browse by category to see what's nearby.- Find campgrounds, picnic areas, visitor centers and other facilities - Find trails, waterfalls, lakes, summits and other points of interest OFFLINE ACCESS: - downloaded maps work without any cell or WiFi connection A GREAT VALUE : Contains a retail equivalent of over $300.00 of detailed National Geographic Trails Illustrated Maps. National Geographic: Inspiring people to care about the planet since 1888. Technical Details: National Geographic's National Parks Map app is optimized for use on Windows Phone 7 devices. Maps for each of the 15 National Parks range in size from 20MB to 102MB each and can be downloaded independently, at-any-time, to save storage space on your device. App Note: Price of app includes maps for the 15 parks listed above, additional data charges may apply depending upon type of connectivity used to download the included maps.